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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 386 · 40 sums
TalentJR

The method (Flip and multiply): a/b × c/d = (a × c)/(b × d), then simplify. A whole number n is n/1. a/b ÷ c/d = a/b × d/c. Decimal × decimal: multiply as whole numbers; the answer has as many decimal places as both numbers together — 1.2 × 0.3 = 0.36. Decimal ÷ decimal: multiply both by 10 (or 100) first — 2.4 ÷ 0.6 = 24 ÷ 6 = 4.

NameDateTime takenScore ___ / 40
  1. 1.4/9 × 3 =
  2. 2.One bag of potatoes weighs 9.7 kg. How many kg do 3 of them make in all? =
  3. 3.7.7 × 0.5 =
  4. 4.One roll of ribbon has 7.1 m. How many m do 2 of them make in all? =
  5. 5.4/5 × 3/8 =
  6. 6.2.4 ÷ 0.6 =
  7. 7.1/3 × 5/7 =
  8. 8.3.5 × 0.9 =
  9. 9.3/5 × 1/3 =
  10. 10.3/5 ÷ 4/7 =
  11. 11.7.15 ÷ 5 =
  12. 12.One bottle of oil holds 3 L. How many L do 12 of them make in all? =
  13. 13.13.56 ÷ 4 =
  14. 14.19.2 ÷ 5 =
  15. 15.5/6 × 13 =
  16. 16.28.16 ÷ 4 =
  17. 17.2/9 ÷ 4/5 =
  18. 18.12.8 ÷ 5 =
  19. 19.3/5 × 5/6 =
  20. 20.One bottle of oil holds 8.4 L. How many L do 5 of them make in all? =
  21. 21.3.3 ÷ 0.3 =
  22. 22.2/5 × 2/9 =
  23. 23.One bottle of oil holds 1.9 L. How many L do 11 of them make in all? =
  24. 24.9.34 ÷ 2 =
  25. 25.4/7 × 3 =
  26. 26.3/8 × 5/9 =
  27. 27.37.52 ÷ 8 =
  28. 28.4/5 × 13 =
  29. 29.3.6 ÷ 0.3 =
  30. 30.7/9 × 5/8 =
  31. 31.5/6 ÷ 1/5 =
  32. 32.One jug of milk holds 5.5 L. How many L do 5 of them make in all? =
  33. 33.34.4 ÷ 8 =
  34. 34.5.26 ÷ 2 =
  35. 35.4.7 × 0.9 =
  36. 36.1/8 × 2/9 =
  37. 37.1/5 × 4/7 =
  38. 38.25.48 ÷ 4 =
  39. 39.5.44 ÷ 2 =
  40. 40.One bag of potatoes weighs 8.8 kg. How many kg do 4 of them make in all? =

Answer key

  1. 4/3
  2. 29.1
  3. 3.85
  4. 14.2
  5. 3/10
  6. 4
  7. 5/21
  8. 3.15
  9. 1/5
  10. 21/20
  11. 1.43
  12. 36
  13. 3.39
  14. 3.84
  15. 65/6
  16. 7.04
  17. 5/18
  18. 2.56
  19. 1/2
  20. 42
  21. 11
  22. 4/45
  23. 20.9
  24. 4.67
  25. 12/7
  26. 5/24
  27. 4.69
  28. 52/5
  29. 12
  30. 35/72
  31. 25/6
  32. 27.5
  33. 4.3
  34. 2.63
  35. 4.23
  36. 1/36
  37. 4/35
  38. 6.37
  39. 2.72
  40. 35.2

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